Qualifications
BE(Hons) Electrical
Research Interests
Andy Shang is undertaking a research in wireless transceivers that receives signal from a source node and forwards an amplified version of the signal to a destination node. These transceivers, which are also known as relays, are often used to obtain spatial diversity gain and improve the power efficiency. These relays are often operated in half duplex mode, where they require two separate time slots for transmission and reception. In a full duplex operation, the relays transmit and receive at the same time slot and on the same frequency and hence, this leads to a loop back interference. This occurs when the relay receiver receives the information that is transmitted by the relay transmitter.
The goal of this research is to solve the full duplex relay problem, which requires designing precoders at the transmitters’ side and weight vectors at the receivers’ side. Here, a precoder is multiplied to the signal before transmission and a weight vector is multiplied to the received signal after reception. Various different precoder and weight vector designs such as zero forcing; minimum mean squared error; and singular value decomposition; are used to maximize the end to end signal to interference plus noise ratio at the destination node.
Andy Shang completed his Bachelor of Electrical Engineering (Honours)
degree of Electrical Engineering at the University of Canterbury in 2013. He is currently completing a Masters degree in conjunction with the Wireless Research Centre and the Electrical Engineering Department at the University of Canterbury. His supervisors are Professor Peter Smith and Dr. Graeme Woodward.
Publication
Andy Shang, Cheng Yu., Smith, Peter J., Woodward, Graeme K. and Suraweera, Himal A. (2014) Linear transceivers for full duplex MIMO relays. Sydney: 2014 Australian Communications Theory Workshop (AusCTW), 3-5 Feb 2014. 11-16.
